/* You can add global styles to this file, and also import other style files */
html,
body,
app-root,
.site {
  width: 100%;
  height: 100%;
  margin: 0;
}

.site {
  display: flex;
  flex-direction: column;
}

main {
  flex: 1; //将中间的空间撑满
}

header {
  background: green;
}

footer {
  background: blue;
}
